1045331100 has 324 divisors, whose sum is σ = 3736922280. Its totient is φ = 243936000.

The previous prime is 1045331099. The next prime is 1045331237. The reversal of 1045331100 is 11335401.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 3157935 + ... + 3158265.

Almost surely, 2^1045331100 is an apocalyptic number.

1045331100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1045331100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1868461140).

1045331100 is an abundant number, since it is smaller than the sum of its proper divisors (2691591180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1045331100 is a wasteful number, since it uses less digits than its factorization.

1045331100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402 (or 381 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 1045331100 is about 32331.5805366827. The cubic root of 1045331100 is about 1014.8876253728.

Adding to 1045331100 its reverse (11335401), we get a palindrome (1056666501).

The spelling of 1045331100 in words is "one billion, forty-five million, three hundred thirty-one thousand, one hundred".